The Doctor and Romana follow a distress signal which leads to the jungle planet Chloris, whose ruthless ruler Lady Adrasta harbors a deadly creature in a pit.
Tom Baker
as The Doctor
Lalla Ward
as Romana
Eileen Way
as Karela
Myra Frances
as Lady Adrasta
Geoffrey Bayldon
as Organon
David Brierly
as K-9 (voice)
David Telfer
as Huntsman
Morris Barry
as Tollund
John Bryans
as Torvin
Edward Kelsey
as Edu
Tim Munro
as Ainu
Philip Denyer
as Guard
